The document discusses implementing multiple-precision arithmetic in WebAssembly. It describes how carry operations are important for multiple-precision addition and multiplication but are not supported natively in WebAssembly. It proposes some strategies for emulating carry operations in WebAssembly using instructions like add, lt_u, and select to add multiples of 64-bit elements with carry propagation. Benchmark results show that 32-bit element processing can outperform 64-bit element processing for some operations like multiplication in WebAssembly. Overall, implementing efficient multiple-precision arithmetic in WebAssembly requires emulating carry operations that are supported directly in x64 processors.
The document discusses implementing multiple-precision arithmetic in WebAssembly. It describes how carry operations are important for multiple-precision addition and multiplication but are not supported natively in WebAssembly. It proposes some strategies for emulating carry operations in WebAssembly using instructions like add, lt_u, and select to add multiples of 64-bit elements with carry propagation. Benchmark results show that 32-bit element processing can outperform 64-bit element processing for some operations like multiplication in WebAssembly. Overall, implementing efficient multiple-precision arithmetic in WebAssembly requires emulating carry operations that are supported directly in x64 processors.
The document discusses using a micro:bit for light sensing applications. It explains how the micro:bit can sense light levels using its LEDs as photodiodes. When an LED pin is set as an analog input, the voltage measured corresponds to the ambient light level. Two example projects are described - an automatic night light that adjusts its brightness based on light levels, and a magic face panel display that changes expressions when the LED is covered and uncovered.
The document provides instructions and examples for using switches, capacitive touch, and game controls on the micro:bit. It includes tutorials for building guessing games where the micro:bit guesses a number by narrowing the range, adjusting LED brightness with touch pins, and creating a dodgeball game where the player character avoids falling balls. Code snippets and step-by-step explanations are given for each example project.
This document discusses LED display control on the micro:bit board. It covers LED principles and applications, the micro:bit LED matrix, LED display control commands including displaying numbers, text, images and arrows. It provides examples of breathing lights, fireworks, and a dynamic screen using variables, conditional and counting loops.
The document describes how to create a 2D platformer game in Unity, including:
1) Adding background animations and music
2) Creating and controlling the player character
3) Spawning random enemies
4) Implementing a health bar UI to display the player's health